Fort Worth daily gazette. (Fort Worth, Tex.) 1882-1891, 1887-01-31

ing the daytime and light up the premises
| by electricity at night. The engine is a
vertical one of tlve-man power, and to
this is attached by pivot a small shunt-
wound dynamo capable Of running about
eight twenty-candle power incandescent
lamps. This dynamo carries leather
friction pulley, which works against a
| tiy-wheei on the engine, and there is also
q high-speed fy-wheel to insure regular
| ity Of running. The FRACTIONAL driving
arrangement is controllable by spring,
and can be thrown in or out of gear as
the engine is required for electric driv-
ing or for other purposes. The whole
plant is very compactly arranged, occu-
pyiHg space of not more than four feet
square by four feet eight inches in height.
Il Manufacturers Gazette.
Abiding to the Yucca palm, which
grows spontaneously In the desolate land
| of Arizona and New Mexico, the Boston
Journal of Commerce says: COT all the
trees in the world you would imagine
this to be most outcast and worthless, so
meager living does it obtain from the
waste of sand and gravel in which it
grows. And yet this goblin tree is now
being sought after and utilized in one of
the worlds greatest industries, an indus
try that affects the daily needs of civlliza
ton. This plant of the desert was for
long time considered vslueless. But not
long ago il was discovered that the fiber
of the Yucca could be made into an ex-
cellent paper. And now one of the;great
Euglish dailies, the London Telegraph,
is printed upon paper madefrom this
goblin tree. Indeed, the Telegraph has
purchased large plantstion in ARIZONA
merely for the purpose of cultivating this
tree and manufacturing paper from it."
The use of asphaltum in building is said
to be largely increasing, principally as q
prevention against damp cellar walls and
underground mason work, coating for
cisterns, etc. The usual method of ap
plying it is to reduce to a semi-liquid
state in large iron pot over good fire,
sufficient asphalt to about two-thirds fill
it, care being taken tnat the flame does
not rise over the top of the pot and ignite
the asphalt. The wall is made as nearly
dry as possible, aud the Joints somewhat
rough to admit of the asphalt penetrating
the pores and securing hod the wall
is then covered with asphalt, applied with
a long-hsndled brush, while the material
is hot and brushed in well-a coating
one-half inch thick being as perfect q
protective as thicker one. A barrel of
asphalt, as found in the market, heated i
and applied to vertical walls OF brick
will ordinarily cover about 25e square
feet of surface and produce most lasting
results.
In one of his recent lectures on natural
forces and energies Professor Tyndall re-
fers to some late developments in the in
genious line of research inaugurated by
FaradaY. By reduction of temperature
and increase of pressure Faraday's ex-
periments had led to the ilquifaction OF
chlorine, and subsequently OF other
gases, but oxygen and carbonic acid and
others resisted all the resources for pro-
ducing cold and for exerting pres
sure which were then at command
Subsequently carbonic acid hal not only
been lIquified but solicited, and scar
bonic acid snow' is not infrequentiy
made. 1t was in Switzerland that the
first successful experiment WAS made by
which oxygen become liqufiied, accom-
panied also by the announcement OF its
The experiment in this
case was performed by PrefessorWroblew-
ski, the degree of cold employed being